bovine viral diarrhea virus, bvdv, vaccine, challenge
Bovine viral diarrhea virus (BVDV) causes respiratory and reproductive disease. The duration of immunity of an inactivated vaccine (Virashield 5: Grand Laboratories, Freeman, SD) was measured in two challenge studies. In both studies the vaccinated animals demonstrated fewer clinical signs when challenged with Type II BVDV at 11 or 13 months post vaccination. These results indicate that an inactivated vaccine administered properly can protect animals against disease up to at least a year post vaccination.
Number of Pages
South Dakota State University
Copyright © 1996 South Dakota State University.
Chase, C. C.L.; Hanson, J.; Fraser, R.; Braun, L.; Anderson, S.; and Hurley, D.J., "Long-Term Protection from Bovine Viral Diarrhea Virus in Feedlot Cattle" (1996). South Dakota Beef Report, 1996. 10.